US20040143452A1

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Publication number: US20040143452A1
Application number: US10/755,536
Authority: US
Inventors: David Pattillo; Benjamin Simon
Original assignee: Podo Tech Inc
Current assignee: Podo Tech Inc
Priority date: 2003-01-15
Filing date: 2004-01-12
Publication date: 2004-07-22
Also published as: WO2004064560A1

Abstract

A method for dynamically analyzing an individual's foot during a stride of the foot. The method receives a plurality of pressure readings taken from a pressure platform adapted to be stridden upon by the foot, wherein the pressure readings comprise a position value, a pressure value and a time; determines a cushioning requirement based on the plurality of pressure readings; determines a pronation requirement based on the plurality of pressure readings; and suggests a level of cushioning and a degree of pronation based upon the cushioning requirement and the pronation requirement

Description

RELATED APPLICATIONS

This patent application claims the benefit of priority of U.S. Provisional Application No. 60/440,032, filed Jan. 15, 2003, which is incorporated herein by reference.[0001]

TECHNICAL FIELD

The invention relates to the field of foot analysis, and more specifically, to a system for and method of dynamically analyzing a foot during a stride in order to determine foot characteristics. Once foot characteristics are determined, appropriate footwear may be suggested.[0002]

BACKGROUND

The world is becoming more interested in exercise, and running, in particular, has grown beyond a cult following to a practice of the masses. In order to cater to this growing market segment, running show manufacturers offer a wide variety of shoes with characteristics designed to meet the individual needs of each individual runner. Manufacturers offer shoes with varying degrees of cushioning, low, moderate, and heavy, to meet individual needs. In addition, there are shoes with varying degrees of pronation, or roll-in, control. Those individuals who heavily overpronate can purchase shoes with a large post inside the arch to help to control the pronation and stabilize the foot in an upright position. Posts are offered in ever decreasing sizes to fit the pronation needs of the purchaser.[0003]

The variety of shoes offered by manufacturers serves no end if the individual runner purchases the wrong shoe. An individual walking into an athletic shoe retail store faces a bewildering array of choices: heavily cushioned shoes with a large post, lightly cushioned shoes with a large post, lightly cushioned shoes with no post, etc. A dizzying number of combinations of pronation control and cushioning leaves an individual seeking guidance as to what shoe purchase is appropriate for her feet.[0004]

But, the knowledge base of the sales staff in most retail athletic shoe stores in generally not up to the task at hand, and here is the weak link in the chain. At best, a sales person may ask a customer about whether he overpronates or underpronates, or may ask how much cushioning the customer likes. But, at best, the sales person only learns the customer's best guess, or subjective opinion, as to what type of stride she has and what type of show she needs. At worse, and as is most common, the sales person does not even know the correct questions to ask, and a customer is left purchasing a shoe based on looks, price, or the opinion of a friend who may have a very different stride.[0005]

In order to overcome the subjective nature of fitting an athlete for a shoe, those skilled in the art have attempted more objective, computerized, approaches to fitting an athletic shoe. Generally, the subject person stands on a platform that would then analyze his foot. This static analysis might measure the pressure at various points on the bottom of the foot to develop a pressure map of the standing foot, or, in more sophisticated systems, the static analysis might also include three dimensional imagery of the static foot. Based on these static analyses, recommendations or a fitting might be made.[0006]

However, these prior art systems performed analysis based solely on static data. None of the prior art systems analyzed a foot dynamically, i.e. during a person's stride. Data taken statically fails to truly analyze the dynamics of a foot during running or exercising, which is the time for which the analysis is truly valuable and needed. A prior art system by the present inventors provides for display of dynamic data from a foot stride, but fails to perform any automated analysis thus relying on a trained individual to interpret the data. Such a system fails in the retail environment where sales personnel are rarely properly trained.[0007]

The present invention is directed to overcoming the one or more problems or disadvantages associated with the prior art.[0008]

SUMMARY

In accordance with an aspect of the present invention, a method for dynamically analyzing an individual's foot during a stride of the foot is provided. The method receives a plurality of pressure readings taken from a pressure platform adapted to be stridden upon by the foot, wherein the pressure readings may comprise a position value, a pressure value and a time. The method further determines a cushioning requirement based on the plurality of pressure readings; and determines a pronation requirement based on the plurality of pressure readings.[0009]

In accordance with another aspect of the present invention, a machine-readable storage medium having stored thereon machine executable instructions is provided. The execution of the instructions is adapted to implement a method for dynamically analyzing an individual's foot during a stride of the foot. The method comprises receiving a plurality of pressure readings taken from a pressure platform adapted to be stridden upon by the foot, wherein the pressure readings comprise a position value, a pressure value and a time; determining a cushioning requirement based on the plurality of pressure readings; and determining a pronation requirement based on the plurality of pressure readings.[0010]

In accordance with yet another aspect of the present invention, a system for dynamically analyzing an individual's foot during a stride of the foot is provided. A pressure platform is adapted to be stridden upon by the foot. A microprocessor is coupled to the pressure platform and coupled a memory. The microprocessor is operable to: receive a plurality of pressure readings taken from the pressure platform, wherein the pressure readings comprise a position value, a pressure value and a time; determine a cushioning requirement based on the plurality of pressure readings; and determine a pronation requirement based on the plurality of pressure readings.[0011]

The foregoing summarizes only a few aspects of the invention and is not intended to be reflective of the full scope of the invention as claimed. Additional features and advantages of the invention are set forth in the following description, may be apparent from the description, or may be learned by practicing the invention. Moreover, both the foregoing summary and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.[0012]

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate one embodiment of the invention and together with the description, serve to explain the principles of the invention.[0013]

FIG. 1 illustrates a system environment in which the features and principles of the present invention may be implemented.[0014]

FIG. 2 illustrates a computer system consistent with the principals of the present invention.[0015]

FIG. 3 is a flow chart illustrating the process of dynamically analyzing a foot consistent with the principals of the present invention.[0016]

FIG. 4 is a flow chart illustrating the process of determining cushioning requirements consistent with the principals of the present invention.[0017]

FIG. 5 is a flow chart illustrating the process of determining cushioning requirements based on forefoot pressure consistent with the principals of the present invention.[0018]

FIG. 6 is a pressure graph illustrating pressure readings and the division of the foot into forefoot, arch area and heel consistent with the principals of the present invention.[0019]

FIG. 7 is a flow chart illustrating the process of determining cushioning requirements based on the speed through the forefoot consistent with the principals of the present invention.[0020]

FIG. 8 is a flow chart illustrating the process of determining pronation requirements consistent with the principals of the present invention.[0021]

FIG. 9 is a flow chart illustrating the process of analyzing the speed of the foot through the arch to determine pronation requirements consistent with the principals of the present invention.[0022]

FIG. 10 is a flow chart illustrating the process of analyzing the pressure on the inside of the forefoot to determine pronation requirements consistent with the principals of the present invention.[0023]

FIG. 11 is a flow chart illustrating the process of analyzing the pressure on the foot in the arch to determine pronation requirements consistent with the principals of the present invention.[0024]

FIG. 12 is a diagram of pressure in the arch area of the foot and midline of the arch area consistent with the principals of the present invention.[0025]

FIG. 13 is a flow chart illustrating the process of analyzing the gait to determine pronation requirements consistent with the principals of the present invention.[0026]

FIG. 14 is a diagram of the gait line consistent with the principals of the present invention.[0027]

DETAILED DESCRIPTION

Reference will now be made in detail to embodiments consistent with the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.[0028]

In general, the present invention provides a method of dynamically analyzing a foot during a stride in order to provide analysis of the cushioning requirements or pronation requirements of an individual's foot. This technique may also be referred to as dynamic gait analysis. Using this information, the method may determine appropriate shoes based on the individual's cushioning requirements or pronation requirements and suggest shoes to the individual.[0029]

The system may receive pressure readings from a pressure platform which provides a plurality of pressure readings, where each pressure. reading may comprise a position value, a pressure value, and a time value. These readings are taken as an individual strides upon and across the platform.[0030]

Cushioning requirements may range, for example, from low to moderate to high and may be calculated by measuring the pressure through the forefoot and/or the speed of the foot through the forefoot. In general, the more pressure placed upon the forefoot, the greater the degree of cushioning required. In addition, the slower the speed of the foot through the forefoot, the greater the cushioning required.[0031]

Pronation requirements may range from severe overpronation to moderate overpronation to neutral pronation to underpronation. In general, the present invention categorizes pronation values, for example, from 5 to 0, where 5 is severe overpronation and 0 is no overpronation. Pronation requirements may be calculated based on one or more of the following determinations: speed of the foot through the arch, pressure on the inside of the forefoot; pressure of the foot in the arch; and/or gait. The method may use one or more of the above determinations, either alone or in combination, to determine pronation requirements.[0032]

FIG. 1 illustrates a system environment in which the features and principles of the present invention may be implemented. The system may comprise a[0033]

computer system

110 coupled to a pressure platform120. The pressure platform may be coupled via Universal Serial Bus, USB2, Firewire, PCI, or serial connection, for example. A pressure platform utilized consistent with the principals of the invention is the Medicapteurs PEL 38 Platform. This platform can acquire pressure data from a 32×32 sensor pad of sensors of 1 cm.×1 cm. at over 100 images per second, thus making it particularly appropriate to the dynamic nature of the present invention. Further advanced Medicapteurs platforms suitable for use with the invention feature a 48×48 sensor pad of sensors of 0.8 cm×0.8 cm. Other sensor pads with greater resolution, for example, may also be used.

FIG. 2 illustrates a[0034]

computer system

110 consistent with the principals of the present invention. In this embodiment, computer systems, such as

systems

110aand110b, operate the method of the present invention.Computer system110amay be coupled to akeyboard130 andmouse140, as well as display160. As illustrated in the block diagram of FIG. 2, a system environment consistent with an embodiment of the present invention may include aninput module210, anoutput module220, acomputing platform230, and adatabase240.Computing platform230 is adapted to include the necessary functionality and computing capabilities to implement the dynamic foot analysis methodology throughinput module210 which is coupled to pressure platform120 (FIG. 1) and access, read and write todatabase240. The results of analyzing the pressure readings are provided as output fromcomputing platform230 tooutput module220 for printed display, viewing, or further communication to other system devices. Such output may include, for example, one or more requirements printouts or shoe recommendations. Output fromcomputing platform230 can also be provided todatabase240, which may be utilized as a persistent storage device for storing, for example, individual pressure readings taken during a stride.

In the embodiment of FIG. 2,[0035]

computing platform

230 may comprise a PC or PDA for performing various functions and operations of the invention.Computing platform230 may be implemented, for example, by a general purpose computer selectively activated or reconfigured by a computer program stored in the computer, or may be a specially constructed computing platform for carrying-out the features and operations of the present invention.Computing platform230 may also be implemented or provided with a wide variety of components or subsystems including, for example, one or more of the following: one or more central processing units, a co-processor, memory, registers, and other data processing devices and subsystems.Computing platform230 also communicates or transfers dynamic analysis input and output to and frominput module210 andoutput module220 through the use of direct connections or communication links, as illustrated in FIG. 2.

Alternatively, communication between[0036]

computing platform

230 and

modules

210,220 can be achieved through the use of a network architecture (not shown). In the alternative embodiment (not shown), the network architecture may comprise, alone or in any suitable combination, a telephone-based network (such as a PBX or POTS), a local area network (LAN), a wide area network (WAN), a dedicated intranet, and/or the Internet. Further, it may comprise any suitable combination of wired and/or wireless components and systems. By using dedicated communication links or shared network architecture,computing platform230 may be located in the same location or at a geographically distant location frominput module210 and/oroutput module220.

[0037]

Input module

210 of the system environment shown in FIG. 2 may be implemented with a wide variety of devices to receive and/or provide the data as input tocomputing platform230. As illustrated in FIG. 2,input module210 includes aninput device211, astorage device212, and/or anetwork213.Input device211 may include a keyboard, a mouse, a disk drive, video camera, magnetic card reader, or any other suitable input device for providing customer information tocomputing platform230. Memory device may be implemented with various forms of memory or storage devices, such as read-only memory (ROM) devices and random access memory (RAM) devices.Storage device212 may include a memory tape or disk drive for reading and providing information on a storage tape or disk as input tocomputing platform220.Input module210 may also includenetwork interface213, as illustrated in FIG. 2, to receive data over a network (such as a LAN, WAN, intranet or the Internet) and to provide the same as input tocomputing platform230. For example,network interface213 may be connected to a public or private database over a network for the purpose of receiving information about the customers from computingplatform230.

As illustrated in FIG. 2,[0038]

output module

220 includes adisplay adapter221, aprinter device adapter222, and/or anetwork interface223 for receiving the results provided as output fromcomputing module220. The output fromcomputing platform230 may be displayed or viewed through display adapter221 (such as a CRT or LCD) andprinter device adapter222. If needed,network interface223 may also be provided to facilitate the communication of the results fromcomputer platform230 over a network (such as a LAN, WAN, intranet or the Internet) to remote or distant locations for further analysis or viewing.

FIG. 3 is a flow chart illustrating a process of dynamically analyzing a foot consistent with the principals of the present invention. At[0039]

stage

310, the method receives pressure readings from the pressure platform. The pressure readings may comprise a position value, a pressure value, and a time value. The position value may comprise, for example, an x-coordinate and a y-coordinate or may be in polar notation. In this way, dynamic reading are receiving based on an individual striding across the platform. Consistent with the principals of the present invention, the pressure readings values may be normalized to a value of between 0 and 100.

At[0040]

stage

320, the method calculates the cushioning requirements based on the pressure readings. Atstage330, the method calculates the pronation requirements based on the pressure readings. Atstage340, the method provides the individual with suggested level of cushioning and pronation based on the cushioning and pronation requirements. Methods consistent with the principles of the present invention for performing

stages

320 and330 are further illustrated below. Other methods may also be appropriate for calculating these values.

FIG. 4 is a flow chart illustrating the process of determining cushioning requirements consistent with the principals of the present invention. Measuring the pressure of the foot at the forefoot and/or measuring the speed of the foot through the forefoot may be used to calculate cushioning. The relative speed of portions of the foot can change as a person strides. For example, a striding foot may remain on the heel for a long period of time, then rapidly move through the forefoot. The speed of the foot at various points is the rate of change of the position of the foot from a first point on the bottom of the foot to a second point on the bottom of the foot. At[0041]

stage

410, the method measures the pressure in the forefoot to preliminarily calculate the cushioning requirements. The larger the pressure on the forefoot, the greater the degree of cushioning required. Atstage420, the method calculates the speed of the foot through the forefoot to modify cushioning requirements. In general, the slower the speed through the forefoot, the greater the cushioning required.

FIG. 5 is a flow chart illustrating the process of determining cushioning requirements based on forefoot pressure consistent with the principals of the present invention. At[0042]

stage

505, the method examines apressure map600 and determines the forefoot, arch, and heel areas of the foot embodied withinpressure map600. In addition, the principal axis of the foot is determined. These values may be used in this and other sub-methods of the present invention.

A slight digression into FIG. 6 will be useful in explaining the principles of the present invention. FIG. 6 is a graph illustrating a[0043]

pressure map

Returning to FIG. 5, at[0044]

stage

510, the average forefoot pressure, f, is calculated from those pressure readings falling within the forefoot area. Atstage515, the average heel pressure, h, is calculated from those pressure readings falling within the heel area. Atstage520, the average heel pressure is compared to heel trigger point, i. Heel trigger point i is established such that at a point greater than i high heel cushioning would be beneficial. If heel pressure, h, is greater than heel trigger pressure, i, then high cushioning is required and it is unnecessary to perform stage410 (stage525).

If not, at[0045]

stage

530 forefoot pressure, f, is compared to forefoot trigger point, j. Forefoot trigger point j is established such that at a point greater than j moderate cushioning would be beneficial. If forefoot pressure, f, is less than forefoot trigger point, j, then low cushioning is required (stage535). Else, medium cushioning is required (stage540).

FIG. 7 is a flow chart illustrating the process of determining cushioning requirements based on the speed through the forefoot according to the principals of the present invention. At[0046]

stage

705, the method calculates the amount of time, tf, that the foot is in the forefoot section during a stride. The method uses the time values within the pressure readings to determine this factor. Those skilled in the art will appreciate that other methods may be used. Atstage720, the method calculates the amount of time, tr, that the foot is in the arch and heel sections of the foot during a stride.

At[0047]

stage

715, the method determines the percentage of time, tp, that the foot is in the forefoot compared to the remainder of the foot. Atstage720, the percentage of time, tp, is compared to a trigger value, I. Trigger value I is established such that at a percentage greater than I increased cushioning would be beneficial. If the percentage of time, tp, is greater than trigger point, I, then, atstage730, the previously calculated cushioning requirement is increased one level. For example, if low cushioning was previously calculated inmethod410, then the cushioning level is increased to moderate cushioning. Atstage725, if the trigger point, I, is not exceeded, then cushioning remains where previously calculated bymethod410.

FIG. 8 is a flow chart illustrating the process of determining pronation requirements according to the principals of the present invention. Pronation requirements may be calculated by using one or more of the following sub-methods, either alone or in combination.[0048]

Stage

810 analyzes the speed of the foot through the arch.Stage820 analyzes the pressure on the inside of the forefoot.Stage830 analyzes the pressure of the foot in the arch. And,stage840 analyzes the gait of the individual. Each sub-method yields a value of between 5 and 0, with 5 indicating severe overpronation and 0 indicating no overpronation. The output of the sub-methods,810-840, may be combined insub-method850 through a weighted average or other method.

FIG. 9 is a flow chart illustrating the process of analyzing the speed of the foot through the arch to determine pronation requirements consistent with the principals of the present invention. At[0049]

stage

905, the time the foot is in the arch area, ta, is calculated. Atstage910, the time the foot is in the heel and forefoot, ts, is calculated. Atstage915, the percentage of time the foot is in the arch area, pa, is calculated. Atstage920, the average forefoot pressure, f, is recalled fromstage510. Trigger points m, n, and o are selected based on the forefoot pressure, f, where m<n<o.

At[0050]

stage

930, if pa<m then the output of this method is set to a pronation value of 0, speed=0 (stage935). Atstage940, if pa<n then the output of this method is set to a pronation value of 3, speed=3 (stage945). Atstage950, if pa<o then the output of this method is set to a pronation value of 4, speed=4 (stage955). If not, atstage960 severe overpronation is detected and the pronation value is set at 5 with none of the other sub-methods,820-840, required.

FIG. 10 is a flow chart illustrating the process of analyzing the pressure on the inside of the forefoot to determine pronation requirements according to the principals of the present invention. At[0051]

stage

1005, the average pressure of the inside of the forefoot is calculated. The inside of the forefoot is that portion of the forefoot on the inside of the principal axis. Atstage1010, the average pressure of the outside of the forefoot is calculated. The outside of the forefoot is that portion of the forefoot on the outside of the principle axis. Atstage1015, the percentage of pressure on the inside of the forefoot, fp, compared with the total pressure on the forefoot is calculated.

At[0052]

stage

1020, if forefoot percentage pressure, fp, is less than trigger point r, then atstage1025 pronation results are set to 0, Pressure=0. Atstage1030, if forefoot percentage pressure, fp, is less than trigger point s, then atstage1035 pronation results are set to 3, Pressure=3. Atstage1040, if forefoot percentage pressure, fp, is less than trigger point t, then atstage1045 pronation results are set to 4, Pressure=4. Otherwise, pronation results of this sub-method are set to 5, Pressure=5 (stage1050).

FIG. 11 is a flow chart illustrating the process of analyzing the pressure on the foot in the arch to determine pronation requirements according to the principals of the present invention. At[0053]

stage

1105, the outer edge of thearch area1205 and the inner edge of the arch area1210 (FIG. 12) is found. Atstage1110, the midline1215 (FIG. 12) is found between the outer edge and the inner edge. Atstage1115, the midline percentage, ml %, is calculated based on the percentage distance that the midline is from the outer edge of the arch.

At[0054]

stage

1120, if midline percentage, ml %, is less than trigger point x, then atstage1125 pronation results are set to 3, Collapse=3. Atstage1130, if midline percentage, ml %, is less than trigger point y, then atstage1135 pronation results are set to 4, Collapse=4. Otherwise, pronation results of this sub-method are set to 5, Collapse=5 (stage1140).

FIG. 12 is a diagram of pressure in the arch area of the foot and midline of the arch area according to the principals of the present invention. The outer edge of the arch is illustrated as[0055]1205. The inner edge of the arch is illustrated as1210. Themidline1215 is placed between these two lines.

FIG. 13 is a flow chart illustrating the process of analyzing the gait to determine pronation requirements according to the principals of the present invention. In general,[0056]

stage

840 analyzes the gait line to detect any rolling in of the foot that may be missed by other stages,810-830. To illustrate FIG. 13, FIG. 14 is a diagram of the gait line consistent with the principals of the present invention. Thegait line1440 is derived based on the pressure readings and is an indication of the center of pressure of the individual through the stride, where the center of pressure is the average point of pressure exerted by the foot on the platform at time, t_i. The principal axis is illustrated as615. Aforefoot perpendicular line1425 extends perpendicular to theprincipal axis615 atforefoot midpoint610. Aheel perpendicular line1430 extends perpendicular to theprincipal axis615 atheel midpoint605. Agait perpendicular1435 extends between the crossing points of thegait line1440 and the

perpendiculars

1425 and1430.

Returning to FIG. 13, at[0057]

stage

1305, the heel perpendicular is found as illustrated above. Atstage1310, the forefoot perpendicular is found as illustrated above. Atstage1315, the gait perpendicular1435 is calculated as shown above. Atstage1320, the gait line is overlaid and compared to the gait perpendicular. Atstage1325, if any points on the gait line fall between the gait perpendicular1435 and theprincipal axis615, then pronation value is a 5, Stride=5, else the pronation value of this sub-method is a zero.

Once these four pronation values are found, in stages[0058]810-840, atstage850 they may be combined through a weighting process for example and used to determine a pronation requirement.

Following the calculation of the cushioning requirement and the pronation requirement, the system may utilize a database of shoes to provide a sample listing of proper shoes. The database may reside in[0059]

database

240 which may be updated in a variety of ways known to those skilled in the art. The database may categorize shoes by cushioning requirement and pronation requirement. For example, a shoe ABC may be associated with a cushioning requirement of low and a pronation requirement ranging from 0 to 2.

The foregoing description of embodiments of the invention has been presented for purposes of illustration and description. It is not exhaustive and does not limit the invention to the precise form disclosed. Modifications and variations are possible in light of the above teachings or may be acquired from practicing of the invention. For example, the described implementation includes a particular computer configuration but the present invention may be implemented in a variety of electronic systems using software, hardware, or a combination of hardware and software to provide the processing functions.[0060]

Those skilled in the art will appreciate that all or part of systems and methods consistent with the present invention may be stored on or read from other computer-readable media, such as: secondary storage devices, like hard disks, floppy disks, and CD-ROM; a carrier wave received from the Internet; or other forms of computer-readable memory, such as read-only memory (ROM) or random-access memory (RAM).[0061]

Furthermore, one skilled in the art will also realize that the processes illustrated in this description may be implemented in a variety of ways and include multiple other modules, programs, applications, scripts, processes, threads, or code sections that all functionally interrelate with each other to accomplish the individual tasks described above for each module, script, and daemon. For example, it is contemplated that these programs modules may be implemented using commercially available software tools, using custom object-oriented code written in the C++ programming language, using applets written in the Java programming language, or may be implemented as with discrete electrical components or as one or more hardwired application specific integrated circuits (ASIC) custom designed just for this purpose.[0062]

It will be readily apparent to those skilled in this art that various changes and modifications of an obvious nature may be made, and all such changes and modifications are considered to fall within the scope of the appended claims. Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims and their equivalents.[0063]

Claims

What is claimed is:

1. A method for dynamically analyzing an individual's foot during a stride of the foot, the method comprising:

receiving a plurality of pressure readings wherein the pressure readings comprise a position value, a pressure value and a time;

determining a cushioning requirement based on the plurality of pressure readings; and

determining a pronation requirement based on the plurality of pressure readings.

2. The method ofclaim 1, further comprising determining a level of cushioning based upon the cushioning requirement.

3. The method ofclaim 1, further comprising determining a degree of pronation based upon the pronation requirement.

4. The method ofclaim 1, further comprising determining a level of cushioning and a degree of pronation based upon the cushioning requirement and the pronation requirement.

5. The method ofclaim 4, further comprising determining a recommended shoe based on the level of cushioning and the degree of pronation.

6. The method ofclaim 4, wherein determining the cushioning requirement further comprises:

determining an average pressure of a forefoot of the foot;

determining an average pressure of a heel of the foot;

if the average pressure of the heel of the foot is greater than a high threshold value, setting the cushioning requirement as high; and

if the average pressure of the forefoot is less than a low threshold value, setting the cushioning requirement as low, and, if not, setting the cushioning requirement as medium.

7. The method ofclaim 6, wherein determining the cushioning requirement further comprises determining a speed of the forefoot and adjusting the cushioning requirement based on the measured speed of the forefoot.

8. The method ofclaim 7, wherein adjusting the cushioning requirement further comprises increasing the cushioning requirement if the speed of the forefoot is greater than a forefoot speed threshold value.

9. The method ofclaim 4, wherein determining the pronation requirement further comprises:

analyzing a speed of the foot through the arch;

analyzing a pressure on the inside of the foot;

analyzing a pressure of the foot in the arch;

analyzing the gait of the foot; and

calculating the pronation requirement based on the analyzing steps.

10. A machine-readable storage medium having stored thereon machine executable instructions, the execution of the instructions is adapted to implement a method for dynamically analyzing an individual's foot during a stride of the foot, the method comprising:

11. The medium ofclaim 10, further comprising instructions for determining a level of cushioning based upon the cushioning requirement.

12. The medium ofclaim 10, further comprising instructions for determining a degree of pronation based upon the pronation requirement.

13. The medium ofclaim 10, further comprising instructions for determining a level of cushioning and a degree of pronation based upon the cushioning requirement and the pronation requirement.

14. The medium ofclaim 13, further comprising instructions for determining a recommended shoe based on the level of cushioning and the degree of pronation.

15. The medium ofclaim 13, further comprising instructions for:

determining an average pressure of the forefoot of the foot;

determining an average pressure of the heel of the foot;

16. The medium ofclaim 15, further comprising instructions for determining a speed of the forefoot and adjusting the cushioning requirement based on the measured speed of the forefoot.

17. The medium ofclaim 16, further comprising instructions for increasing the cushioning requirement if the speed of the forefoot is greater than a forefoot speed threshold value.

18. The medium ofclaim 13, further comprising instructions for:

analyzing a speed of the foot through the arch;

analyzing a pressure on the inside of the foot;

analyzing a pressure of the foot in the arch;

analyzing a gait of the foot; and

calculating the pronation requirement based on the analyzing steps.

19. A system for dynamically analyzing an individual's foot during a stride of the foot, the system comprising a memory and a microprocessor coupled to the memory and programmed to:

receive a plurality of pressure readings wherein the pressure readings comprise a position value, a pressure value and a time;

determine a cushioning requirement based on the plurality of pressure readings; and

determine a pronation requirement based on the plurality of pressure readings.

20. The system ofclaim 19, wherein the microprocessor is further programmed to determine a level of cushioning based upon the cushioning requirement.

21. The system ofclaim 19, wherein the microprocessor is further programmed to determine a degree of pronation based upon the pronation requirement.

22. The system ofclaim 19, wherein the microprocessor is further programmed to determine a level of cushioning and a degree of pronation based upon the cushioning requirement and the pronation requirement.

23. The system ofclaim 22, wherein the microprocessor is further programmed to determine a recommended shoe based on the level of cushioning and the degree of pronation.

24. The system ofclaim 22, wherein the microprocessor is further programmed to:

determine an average pressure of the forefoot of the foot;

determine an average pressure of the heel of the foot;

if the average pressure of the heel of the foot is greater than a high threshold value, set the cushioning requirement as high; and

if the average pressure of the forefoot is less than a low threshold value, set the cushioning requirement as low, and, if not, set the cushioning requirement as medium.

25. The system ofclaim 24, wherein the microprocessor is further programmed to determine the speed of the forefoot and adjust the cushioning requirement based on the measured speed of the forefoot.

26. The system ofclaim 25, wherein the microprocessor is further programmed to increase the cushioning requirement if the speed of the forefoot is greater than a forefoot speed threshold value.

27. The system ofclaim 22, wherein the microprocessor is further programmed to:

analyze a speed of the foot through the arch;

analyze a pressure on the inside of the foot;

analyze a pressure of the foot in the arch;

analyze a gait of the foot; and

calculate the pronation requirement based on the analyzing steps.